3000 Series Plastic Bushings

Joelk · #1 05-02-2017, 05:17 PM

One of the things about the 3000 Series that disappoints me is the use of plastic bushings in the forward/reverse controls and other places.

I have replaced them on pretty much every 3000 Series that I have owned.

Working on one of mine today and one of the bushings on the reverse control was worn through. I caught it before it caused much damage, but...

I replaced the plastic bushings with bronze flange bushings and this seems like it is going to work well. I used BFBs that are 5/8" ID X 3/4" OD. I had to enlarge the hole in the bracket and frame slightly(about a 16th") and drill a new hole in the shaft for the clip, but the pedal now seems to work very smoothly and I doubt that the BFBs will ever need to be replaced.

I ordered some 3/8" x 1/2" BFBs that I plan to install in the linkage between the pedals and elsewhere.

Other than the labor, I don't see any downside to doing this. Does anyone else?

I am also thinking about installing BFBs on the pivit points of the hydraulic valve levers(for deck etc). One two of my tractors these valves do not self center properly. I have rebuilt(cleaned and replace Orings) with no change in operation.

I may have to do a little spacing to get clearance for the flange part of the BFBs(BFB flange is thicker than plastic bushing flange)

Has anyone installed BFBs in this location? Results?

john hall · #2 05-02-2017, 08:17 PM

Never worked on those machines, but dad had to work on the steering on a couple of "cheap" cadets about 10 years ago that used plastic bushings on the steering shafts/sector---something in there wore out premature. I think MTD replaced with bronze. Are you using plain bronze or oilite (oil impregnated)? I think the later would be better, but can't see how either could hurt.

I don't get why plastic (most likely nylon) bushings fail in some applications. I've got idler sprockets on a 30 year old corn planter that are made out of nylon. They are worn but still work fine. Seen plenty of bushings hold up, seen them wear in 1/2 as well. I think some applications don't have the bushing securely held in place and if it wiggles around, they are more prone to fail. That's my guess. Wish I could be of actual help on your machine instead of just rambling about plastic parts

J-Mech · #3 05-03-2017, 01:06 AM

Quote:

Originally Posted by john hall

I think some applications don't have the bushing securely held in place and if it wiggles around, they are more prone to fail.

Build of materials.... not all "plastic" is created equally.

To the OP:
Why would you think that there would some kind of issue with what you did. And if there was, would it matter now? You already did it. Kinda late to ask if there might be problems with doing it isn't it?

You improved it. At least your bushing issues anyway. It will hold until you wear the shaft that rides in them out, or the bushing fails from not being a press fit.

I still have no desire at all for a 3K machine. The reasons you state is just one of several. I'll keep my old iron machines with actual bearings and metal hoods.

Joelk · #4 05-03-2017, 06:28 AM

Thanks for the replies.

I used the Olite BFBs.

I installed BFBs, in one area, on one of my tractors. There are several areas that I have not yet swapped bushings out, and I have several tractors.

I generally like my 3000 Series Tractors, but the plastic bushings is one area that I am not impressed with.

IMO the bushings are thin and flimsy for the application.

Almost makes me think it is planned obsolescence. After a couple/few years the plastic bushings wear out and it affects the performance of the tractor potentially prompting the owner to trade it is. Dealer gets to sell a new tractor, and with little cost, the dealer can replace the plastic bushings, restoring performance and can then resell it for much more than trade in value.

I was at CC Dealer yesterday and walked by Svc Dept. Saw a 3200 with a tag on it saying slow reverse. Classic symptom of worn bushings. Some would trade instead of repairing, not knowing it is probably a cheap, simple (although short term, if Plastic Bushings are used) fix.

J-Mech · #5 05-03-2017, 11:05 AM

I think your probably right.

Enjoy your 3K machine. Your in the minority.

Oak · #6 05-03-2017, 11:12 AM

Joelk, don't tell everyone how nice these machines are cause your gonna drive the prices up.

I haven't replaced the bushings on any of mine yet but I need to. I don't think that is too bad for around 250 hours on the ticker. Let me know how they work for you. There were some guys over on MTF a year or so ago doing the same thing.

Yep, I'm in the minority too.